Machine for dividing and forming dough or other plastic material.



F. KHTZ.

MACHINE FOR DIVIDING AND FORMING DOUGH OR OTHER PLASTIC MATERIAL.

' APPLICATION IILBD JULY 26,1911. I

1,101,857, Patented June 30,1914.

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P. KHTZ. MACHINE FOR DIVIDING AND FORMING DOUGH 0R OTHER PLASTICMATERIAL. APPLIOATION PIILBD JULY 26,1911.

1,101,857. PatenteaJune'aarlm. `2 SHEETS-SHEET 2.

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'NITED STATES PATENT OFFICE.

FRIEDRICH KHTZ, OF CANNSTATT-STUTTGART, GERMANY.

MACHINEFOR IDIVIIDING- AND FORMING DOUGI-I OR OTHER PLASTIC MATERIAL.

To all whom t may concern Be it known that I, FRIEDRICH KHTZ, a subjectof the King of Prussia, and resident of Cannstatt-Stuttgart, Germany,have invented certain Improvements in Machines for Dividing and FormingDough or other Plastic Material, and do hereby declare the following isa full, clear, and exact descrip-- tion of the same.

The object o-f this invention is to provide apparatus for dividing updoughlike substances into portions of predetermined size and in whichthe substance is pressed by a feeding screw alternately into twocylinders formed in a rotary body, the stroke of the cylinder pistonsbeing made adjustable so as to deliver portions of dough or the like ofdesired vsize or weight. The arrangement is such that while one cylinderis being filled the other is being emptied of its contents, so that theoutput of the engine may be as high as possible.

The invent-ion will be described with reference to a. machine having twocylinders and illustrated in the accompanying draw ings, in which,

Figure 1 is a vertical section along the axis of the machine; Fig. 2 isa horizontal section on the line a4?) in Fig. 1; Fig. 3 is a horizontalsection on line c-CZ in Fig. 1; Fig. 4 is a` vertical section on theline e--f in Fig. 1; Fig. 5 is a vertical section on the line g-t inFig. l; and Fig. 6 is a sectional elevation on the line c in Fig. 1.

The dough or other substance is pressed by a conveyer or feeding screw 1into the` lower of the two cylinders 2, which together constitute arotary body 3 supported in bearings on the support or frame 4. The doughas it is fed into a cylinder presses the corresponding piston 5 andpiston rod G forward till the end of the rod engages the screw nut 7.These nuts each have an arm engaging a suitably formed part of the framewhich prevents them from turning, but they may be simultaneously turned,by

means of the hand wheel 9 and toothed the latter' are pivotally joinedwith the le- Specification of Letters Patent.

Application flied July 26, 1911.

Patented June 30, 1914. serial No. 640,596.

vers 13. Pressure of a piston rod 6 aga-inst the corresponding nut 7causes the rod 13 connected with said nut, to push against a lever 14,fixed on the shaft 15 with its free end projecting through one of a pairof apertures 16, formed in the disk 17 which forms part of the body 3. Aforked lever 18 is also fixed on the shaft 15 and supports the clutchcoupling 20 sliding on t-he shaft 19. The shaft 19 may be driven by thebevel gearing 21 controlled by the fast and loose pulleys 23. A wheel 24provided with clutches is mounted eccentrically and loosely on the shaft19 and is placed under the clutch couplingx20. The toothed eccentricwheel 24 is of elliptical form and drives a similar wheel 25 which isintegral with or fixed to the bevel gear 26 on shaft 27; the wheel 26meshes with thel toothed rim 28 of the rotary body 3, the ratio of ,fgearingv bein 1:2.

When a rod 13 drives the lever 14 out of an aperture 16 the clutchcoupling 20 is thrown into gear with the wheel 24 by means of the lever18 and the rotary body 3 is set in motion by means of the gearing 24,25, 26 and 28. The nose of the lever 14 will slide on the face of therotating disk 17 and thus keep the clutch `coupling in gear with wheel24 for half a rotation. The lever 14 will, after a half rotation of thedisk 17, fall into the otherv aperture 16 under the influence of spring29, which has its two ends ixed to lever 18 and to the frame 4. As lever14 falls into the latter aperture or notch the lever 18 will draw theclutch coupling out of engagement with the wheel 24 and the rotary body3 will be held stationary. The eccentric wheels 24 and 25 are disposedin such a way that the rotary body is slowly put into motion when theclutches are thrown in, after which the speed first quickly increases,then decreases, and iinally becomes slo-w again. The object of thisarrangement is that shocks may be avoided and the time needed forturning the rotary body 3 reduced as muchl as possible. When the lever14 engagesone of the apertures 16 in the disk 17 and draws the coupling2O out of gear with wheel 24, the coupling will, by action of the spring29, be thrown into gear with the lower of two toothed wheels 30 whichare mounted to turn about diametrically oppositely arranged studs on thebody. Each toothed wheel 30 is in mesh rod (3 engages a collar on therod 13 and.

thereby rocls the levers le, 18 into their middle Josition wherein theclutch counlino-` l a i .e

rotates freely between the Wheels Q4 and 30. Eetent levers 35, 38pivot-ed on the frame are adapted to leep the clutch coupling in themiddle position and the higher of the two piston rods in the eXtremerear position. The detent portions of the levers Y are adapted to slideover the heads 36 of the piston rods and retain them alternately in thedesired position, by means of the pressure of springs 37. lli/*hen thearms 38 of the detent levers 85, 38 by reason of the rotation of thedish. portion 17 are brought alternatelyT into engagement with a cammember 559 xed on frame ll, the detent portion 35 is moved out ofengagement with 'the end of the piston rod Which is thereupon free to bepushed forward under pressure of the dough being fed in.

The machine ivorhs automatically as folloivs:-Supposing the nuts 7 havebeen adjusted compatible with desired quantities or weights of dough tobe portioned olf, power is applied `and the feeding screiv then pressesthe dough against the piston 5 which for the tim( being is lowermost andwhich is thus moved forward in its cylinder' 2; as soon as this cylinderis filled with the predetermined Weight of dough the rotary body 3 is,as explained above, turned and the cylinder that ivas in the loiverposition rises to the upper position, and its piston 5 is driven bachand at the same time forces out the dough fro a inside the cylinder andthe expelled dough is separated from the remnant. adjacent to tie pistonby a knife lle() during the nent rotation of the rotary body il. is theupper piston drives the dough out of the first cylinder, noiv in theupper position do h entering the other cylinder drives its p. `onforward and the process is repeated, a high efficiency being in this wayobtained.

'livo feeding screws may be employed instead of one, as sh ivn, or anyother suitable device for ceding the dough under pressure may be alrnatively employed. Mechanisms of suitable lrnovvn hind, automaticallyoperating to interrupt the feed of the dough to the cylinders ivhile thebody 3 is rotating, may be at.: y ted to the machine. ln the machinerepresented in the drawings the dough is pushed in the lower cylinderand driven out of the upper one; this disposition may,

however, be rev sed, or the tivo cylinders.

may be mounted side by side. 'llhree or more cylinders may be employed,provided. the controlling mechanism be modilied.

Having now particularly described and ascertained the nature of my saidinvention and in What manner the same is to be performed, l declare thatWhat l claim is:

l. In a machine for dividing plastic material into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston within each of said chambers, power devicesfor rotating said body to bring the chambers therein successively intopositionto receive material from the feeding means, a rack connectedWith each piston, a plurality of trains of gearing carried by the rotarybody and each engaging one of said racks, a clutch adapted to rendereither said rotating or piston reciprocating means operative, and meanscontrolled by movement of the piston in the chamber being filled forsuccessively shifting the clutch to actuate the rotating means, thereciproeating means and to render both said means inoperative.

2. ln a machine for dividing plastic material into portions ofpredetermined size or weight, the combination of a rotary body providedwith a plurality of chambers, means for feeding material into one ofsaid chambers, an annular gear connected With said body, a poiver shaft,gearing connecting said power shaft with said annular gear andcomprising two intermeshing eccentric gears whereby the body Will berotated to bring the several chambers 'thereof successively intoposition to receive material from the feeding means, means forexpellingmaterial from said chambers successively, and a clutchmechanism controlled by the material in the chamber being filled, foralternately connecting the shaft With and disconnecting it from saidgearing for rotating the body.

3. In a machine for dividing plastic material into portions ofpredetermined size or nf'eight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston Within each chamber, tivo trains of gearingadapted, respectively, to rotate the body, to bring the chambers thereinsuccessively into position to receive material from the feeding means,and to move the piston in the filled chamber to eject the materialtherefrom, a driving shaft, a clutch gear adjustable to connect eitherof said trains of gearing to the driving shaft, and means controlled bythe amount of material in the chamber being filled for moving saidclutch to successively connect the tivo trains of gearing with thedriving shaft and then from engagement with both said trains.

4. ln a. machine for dividing plastic mate Tico lSO

rial into portions of predetermined size or Weight, the combination of arotary body containing a plurality of chambers, means for feedingmaterial into one of said chambers, a piston Within each chamber, araclr connected With each piston, a pinion meshing with each rack, adriving shaft, gearing for rotating the body to bring the chamberstherein successively into position to receive material from the feedingmeans, and means controlled by the amount of material in the chamberbeing filled for successively connecting the driving shaft With the bodyrotating gearing and the pinion engaging the rack connected with thepiston in the filled chamber.

5. In a machine for dividing plastic mates rial into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston Within each chamber, a rack connected witheach piston, a pinion meshing With each rack, a cont-inuously runningdriving shaft, gearing for rotating the body to bring the chamberstherein successively into position to receive material from the feedingmeans, and means controlled by the amount of material in the chamberbeing filled for automatically connecting the driving shaft with thebody rotating gearing, then disconnecting said gearing and shaft andconnecting the pinion engaging the rack of the piston in the filledchamber With the driving shaft and finally disconnecting the shaft fromboth said pinion and gearing.

6. In a machine for dividing plastic material into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means kfor feeding material into oneof said chambers, a piston Within each chamber, means controlled by theamount of material in the chamber being filled for rotating the body tobring another chamber into position to receive material from the feedingmeans and to move the piston in the filled chamber to force the materialfrom said chamber, means for holding the last said piston at the limitof its material ejecting movement, and means for releasing said holdingmeans as the chamber containing said piston comes into position toreceive material from the feeding means.

7. In a machine for dividing plastic material into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston in each chamber having its stem projectingrearwardly from the chamber and provided with a rack, pinions mounted onthe body and each constantly engaging one of the racks, gearing adaptedto rotate the body, a driving shaft, a clutch connected With said shaftand movable in opposite directions to, respectively, connect the shaftWith said body rotating gearing and with one of the piston actuatingpinions, a lever for shifting the clutch to connect the driving shaft tothe body rotating gear, a spring for moving the clutch into engagementwith the adjacent piston actuating pinion, means on the rotary bodyengaging the clutch lever to hold the clutch in an intermediateposition, and means controlled by the amount of material in thevchamberbeing lled for actuating the clutch lever.

8. In a machine for dividing plastic material into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston in each chamber having its stem projectingrearwardly from the chamber and provided With a rack, pinions mounted onthe body and each constantly engaging one of t-he racks, gearing adaptedto rotate the body, a driving shaft, a clutch connected With said shaftand movable in opposite directions to, respectively, connect the shaftwith said body rotating gearing and with one of the piston actuatingpinions, a lever for shift-ing the clutch to connect the driving shaftto the body rotating gear, a spring for moving the clutch intoengagement with the adjacent piston actuating pinion, means on therotary body engaging the clutch lever to hold the clutch in anintermediate position, an adjustable abutment in the path of eachpiston, and a trip rod connected with each abutment, said rod beingadapted to rock the clutch lever When the desired predetermined quantityof material has been introduced into the chamber being lled.

9. In ya machine for dividing plastic material into portions ofpredetermined size or Weight, the combination of a rotary bodycontaining a plurality of chambers, means for feeding material into oneof said chambers, a piston in each chamber, gearing adapted to rotatet-he body to bring the chambers therein successively into position toreceive material from `the feeding means, independent gearing adapted tomove each piston to eject material from the chamber in Which it isarranged, a driving shaft, a clutch member movable in one direction toconnect the shaft With the body rotating gearing and in the oppositedirection to connect said shaft and the means for actuating the pistonof a filled chamber, a lever for shifting the clutch to connect thedriving shaft to the body rotating gear, a disk on the rotary bodyhaving apertures corresponding to the number of chambers and eachadapted to receive an end of the clutch lever, means controlled by theamount of material in the chamber being filled for n Witness whereofhave hel'unts Signed my name m the presence 0f two subscllbmg 10Witnesses.

-Gcking the dutch lever fvwm Qngagement with h@ disk, and a spring forrocking Said haver in the Oppe directcn into engagement with @1Q diskund to' Connect the pig- 'sgfm actuating gem' of the, 'llod Chamber withthe driving shaft the end of the clutch laval Comes inte :Llinemcnt withthe Bezit apm'ure; in che disk.

FMEDMGH MHTZ.

Wtnesses ERNEST ENTENMANN, FRIDA KLAIBER.

@epics of this patfm; may oe Ohta-insel for ve cents each, by addressingthe Commissioner of Katerina, Washington, D. C.

